[Matplotlib-users] How to center axes intersecting at (0,0)

[sh77]

Hi,

I'm new to matplotlib. I would like to do something very simple. In the
figure created by the following code, I would like the axes to be centered
in the figure and intersecting at point (0,0):

import matplotlib.pyplot as plt
plt.plot([1,2,3,4], [1,-4,9,-16], 'ro')
plt.axis([-6, 6, -20, 20])
plt.title('Title') 
plt.show()

Can you please give me the simplest lines of code to achieve this? (the
hints to solutions that I have seen over the internet are amazingly complex
for such a simple task)

Many thanks

saikari



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